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(No Model.)

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SAW. No. 266.006. Patented 001:. 17, 1882..

WITNESSES. I JV VEJV' TOR.

. flaw-{W 'ZQM awzaw UNITED STATES PATENT OFFICE.

ELIAS (J. ATKINS, OF INDIANAPOLIS, INDIANA.

SAW.

SPECIFICATION forming part of Letters Patent No. 266,006, dated October 17, 1882.

l Application filed April 17, 1882. (No model.)

To all whom it may concern Be it known that I, ELIAS O. ATKINS, of the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Crosscut-saws, of which the following is a specification.

The object of my said invention is to produce a crosscut-saw which shall cut more rapidly and with a less expenditure of strength than those whereon the teeth are formed and arranged ill the ordinary manner.

It consists in the peculiar formation and ar rangenlent of the several sets of teeth, whereby the aforementioned object is accomplished, as will be hereinafter specifically set forth.

I am aware that arranging the cutting-teeth in sets and providing a clearing-tooth between each set is old. I am also aware that filing the teeth so that each alternate set will cut in the opposite direction to the adjacent sets is old. I therefore desire to be understood as disclailning all devices not hereinafter expressly described and claimed as new.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure 1 is a side view of a saw embodying my invention; Fig. 2, a detail view, on an enlarged scale, of a portion of the sawplate and several teeth thereon, showing more exactly the form and arrangement of said teeth; and Fig. 3, a perspective view of substantially the same portion shown in Fig. 2 when turned teeth upward.

Ill said drawings, the portions marked A represent the body of the saw-blade, which is of the usual form; B B, the teeth of the sets which out most when the saw is moving to the right; 0 O, the teeth whichcut when the saw is moving to the left, and D the clearingteeth.

Ill my present invention the distinctive features are as follows: Each of the clearingteeth D, instead of being M -shaped, as is common, consists of two sharp'projectin g parts, each of which, if divided by a central vertical line, would consist of two halves alike ill form and shape. This construction is superior to the M-shaped form in that both parts will assist to clear the kerf when the saw is moving in either direction, while only one part of the M-shaped tooth will so operate at a time. This is especiallyimportant in the form of saw shown, as when the cutting-teeth are arranged in sets, each alternate set cutting in one direction only, a larger amount of sawdust can be out than can be successfully thrown out by the M-shaped clearers, and therefore this form of clearers, which does do this work, improves the saw very materially.

Another improvement in this saw consists in the manner of filing the teeth. As has before beenstated, and as will readily be seen, the cutting-teeth are arranged ill alternatelycutting sets. Heretofore ill saws of this character the teeth have been filed ill the same way that the old style of teeth were filed-that is, each alternate one beveled alike. invention that tooth of each set which is nearest to a clearing-tooth is beveled like the one upon the opposite side of the c1earing-to0tll. This arrangement allows the tooth which is actively ill the out to clear a direct path for the one which, by its shape, does little or no cutting, and the latter is thus enabled to pass through the log with a less expenditure of force. Ill other words, each tooth which is formed with a sharp or cutting bevel is followed by one having a sloping non-cutting bevel, and by my arrangement the latter is enabled to follow in the track of the former without being obliged to cut any portion of its own track.

These advantages, ill combination with those of the alternately-cutting sets of teeth, make an exceedingly rapid cutting saw, and one which is therefore very superior.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

A crosscut-saw having its cutting-teeth arranged in sets, with a clearing-tooth between each set, one set, B B, being sharpened in the lorm shown to cut illone direction, and the other, C 0, being sharpenedin like manner to cut ill the other direction, and the clearing tooth D, being composed of two parts, both parts being alike, and each part alike on both sides, all substantially as shown and described, alld for the purposes specified.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 12th day of April, A. D. 1882.

ELIAS o. ATKINS. in. s.]

Ill presence of- V C. BRADFORD, J GEN H. RILEY.

Ill my 

